Front portion of a shoe sole



FIG. 1 is a front, right, bottom perspective view of a front portion of a shoe sole, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken-line showings of a rear portion of a sole in FIGS. 1-6 and of a shoe in FIGS. 1 and 4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a front portion of a shoe sole, as shown and described. 